Is Earth a planet?--Aleteia

Is “Planet Earth” really a planet?

Planet Earth facts and information

Scientists say they've finally found remnants of Theia, an ancient planet that collided with Earth

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Earth is actually two planets, scientists conclude

Inspiring Saints: Protecting Our Planet

Planet Erde NASA

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Why is Earth called 'Earth'? - BBC Sky at Night Magazine

Opinion The Earth Is Just as Alive as You Are - The New York Times

Theia slammed into Earth, left marks and then formed the Moon, study suggests

Earth Day: A Catholic response to the environmental issues

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Five Facts About Earth, Our Home Planet, NOVA